Bridge for traveling cranes.



S. BUCKLEY.

BRIDGE FOR TRAVELING CRANES. APPLICATION EILED JUNE 2. 1917. RENEWED JAN. 7, 1919.

1,296,?58. Patented Mar. 11.1919.

3 SHEETS-SHEEI I.

IN VE/V TOR TOR/VEY s. BUCKLEY.

BRIDGE FOR TRAVELING CRANES. APPLICATION FILED JUNE? 1.917- RENEWED JAN- 71 I919.

1,296,758 Patented Mar. 11.1919.

3 SHEETS-SHEEI 2.

TTOR/VEY 1n: Noam: PEYERS m. Puamunm, wanlNcYoN, n. c,

INVENTOR S. BUCKLEY.

BRIDGE FOR TRAVELING CRANES. APPLICATION FILED wusz. 1917. RENEWED JAN. 7,19l9.

Patented Mar. '11, 1919.

3 SHEETS-SHEET 3.

TED STATES PATENT OFFICE.

SYDNEY BUCKLEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NILES-BEMENT- POND COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

BRIDGE FOR TRAVELING CRANES.

Specification of Letters Patent. Patented Mar, 11 1919 Application filed June 2, 1917, Serial No. 172,425. Renewed January '7, 1919. Serial No. 270,060.

To all whom it may concern."

Be it known that I, SYDNEY BUoKLnY, a citizen of the United States, and a resident of Philadelphia, in the county of Philadelcomprises a movable bridge having two par- 7 allel separated elements respectively carrying rails. A hoisting mechanism is provlded which consists of a trolley movable along the rails on the bridge and depending load engaging elementswhich usually extend be tween the two elements of the bridge.

The invention relates especially to the bridge elements of cranes of the type specifled, and a construction embodying my present invention is in some respects similar to the construction disclosed and claimed in my copending application for cranes, Serial No. 149,180, filed February 17 1917. In the design of cranes, in order to meet the variou and different requirements as concerns span, capacity, character of load, operating conditions, etc., it is necessary to vary the character ofthe bridge construction. The object of the present invention is to provide a bridge construction of the general type set forth in my aforesaid copending application but which is adapted to meet different requirements.

In the accompanying drawings I have illustrated the embodiment of the invention which I now deem preferable, but it will be understood that the construction shown is intended to be merely illustrative and is not intended to define or limit the scope of the invention. Particularly it will be understood that the shapes of the structural sections used, the means for oonnectingthe several members together and the various structural details can be varied widely in accordance with the requirements of any particular case ,or in accordance with the preferences of the designer.

0f the drawings:

to which the invention does not directly relate being omitted.

Fig. 2 is a transverse vertical sectional View, the part at the left being taken along the line 2-2 ofFig. 3 and the part at the right being taken along the line 2 --2 of Fig. 3.

Fig. 3 is a longitudinal vertical sectional View taken along the center line of one of the bridge elements.

Fig. dis a fragmentary plan view of oneofthe bridge elements, certain of the parts being broken away to show other parts.

Referring to the drawings, particularly to Figs. 1 and 2, it will be observed that I have shown a crane comprising a traveling bridge which is carried at its ends on trucks which travel along rails 1, 1 supported on suitable elevated structures 2, 2. The bridge is made up of two longitudinal elements arranged with a space between them. 7 The two elements are connected atthe ends by suitable transverse members 3 as shown in Fig. 2. Preferably there is provided a separate two-wheeled truck'element 4 for each end of each bridge element. 7

For the purpose of moving the crane as a whole along the rails 1, 1', one or more truck wheels at each end of the bridge are connected with a suitable driving motor. As illustrated, one of the truck wheels at each end is connected with a gear wheel 5 which meshes with a pinion 6 on a shaft-7 which extends longitudinally fromone end ofthe bridge to the other. A motor 8 is provided for rotating the shaft 7 thus serving to move the bridge in one direction or the other as required.

S-upported'on each of the said longituditween the two longitudinal elements of the Figure 1 is a side elevation of'a craneembodying the invention, some of the parts bridge. By means of a motor 13 the rope can be wound upon or unwound from a drum 14, thus causing the hook with its load to be raised or lowered. i

There is a suitable cage which is provided with space for an operator and with suitable controlling devices whereby the movements of the bridge and of the hoisting mechanism can be started, stopped and con trolled as required.

The present invention relates primarily to the construction of the two main side elements of the bridge, and as these elements are similarto each other it will be. suificient todescribe but one of them in detail. In

7 thedrawings many of the structural details are omitted or, are incompletely shown, as

these constitute no part of the invention and can be variedas desired. a

In the'constiuction presented in my aforesaid application Serial No. 149,180, eachside element of the bridge comprises two v In the drawings, the two upper members of each'mam girder are indicated by 16 and 17 respectively, and, as shown, each of these members comprises two angle bars arranged with their horizontal flanges uppermost and v a vertlcal plate secured between the vertical flanges of the bars. The lower tension mem-' ber of each main girder is indicated by 18, V

and, as shown, this comprises four angle bars arranged with their horizontal flanges in contact, a vertical plate being secured between the vertical flanges of the bars. The three longitudinal members 16, 17 and 18 are connected at their ends to suitable end structures 19,19. V V 7 The upper longitudinal members of each girder are connected with the lower longitudinal member by means of diagonal truss members 20, and 21. These diagonal bars are shown as being in the form of channels.

Positioned between the longitudinalmembers 16 and 17 of each girder and at approximately the level thereof, is a rail carrying girder 22. This is shown as being in theform of an I-beam. To each of these girders 22 one of the rails 9 is 1 secured. Eachrail-carrrying girder 22 is suitably connected with the longitudinal members of the corresponding main girder and prefer:

ably it is' directly connected with each longitudinal member, although my invention is not limited in this respect. As illustrated, transverse members 23, 23 extend transversely at intervals fromone to the other of theupper members 16 and 17. One of i the transverse members is preferably lo cated in each transverse plane where the diagonal members 20 and 21 are connected with the supper.longitudinal members. As illustrated, each transverse member 23 is in the form of an I beam which extends through a suitable notch formed in the railcarrying I-beam 22.

For providing further supporttor the rail-carrying I- beam, 1. provide vertical members 24' extending from the lower longitudinal member 18 to the rail-carrying beam. p located midway between two of the transverse members 23 and at a point wherethe lower member 18 is joined by the diagonal members 20 and 21.

Each vertical member is preferably It will be observedthat insome respects this construction is more simple than that set forth in my copending application above re ferred' to. The construction is such that at least a part of the rail load'can be transmitted directly tothe main'girder by means of simple compression members such as the members 24, 24. H p

What I claim s: j

1. 'A traveling crane bridge element comprising two spaced upper longitudinal compression members, a single centrally located lower longitudinal tenslon member, diagonal truss members connecting the two upper members with the single lower member, 1a

rail carrying girder positioned centrally between the two upper members, and means for supporting the rail carrying girder from the longitudinal members. 7

2. A traveling crane bridge element come prising two spaced upper longitudinal compression members, a single centrally located,

lower longitudinal tension *member, diagonal truss members connecting the two upper members with the single lower member, a rail carrying girder positioned centrally byetween the two upper members, and supports for the rail carryinggirder extending upward from'the lowerlongitudinal member.

lot)

3. A traveling orane bridgeelement comprising two spaced upper longitudinal com-- pression members, a single centrally located lower longitudinal tension member, d-iago-' nal truss'members connecting'the two up per members with the single lower mem- 7 her, a rail carrying girder positioned cen trally between the two upper members, and supportsfor the rail carrying girderextending transversely between the two upper tween the tWo upper members, supports for bers, diagonal truss members connecting the 10 the rail carrying girder extending upward longitudinal members, a centrally positioned from the lower longitudinal member, and rail carrying girder, and load transmitting additional supports for the rail carrying members for connecting the rail carrying 5 girder extending transversely between the girder directly to both the upper and the two upper longitudinal members. lower longitudinal members. 15

5. A traveling crane bridgeelement com- In testimony whereof, I hereto afiix my prising Vertically spaced upper and lower signature.

longitudinal compression and tension mem- SYDNEY BUCKLEY.

Copies of this patent may be obtained for five eentseach, by addressing the Commissioner of .Patents,

Washington, D. G. 

